limit result match to char limit?

I have been digging around trying to find if there is a way to get
MySQL to limit a FullText match or any type query to the number of
words or chars in a row. Does anyone have any information on this?

I lucked out and found CHAR_LENGTH() after 2 hours of searching. I
guess now my questions is if anyone knows how to limit it to the number
of words. ie only return results with 25 words or less, etc.